Ball-bearing.



S. G. WINGQUIST.

BALL BEARING.

APPLICATION FILED AUG.28,1907

1,928,844, Patented-June 4, 1912.

i 1 Iv;

5 a ma who-z lorncq I eral character of a simple and comparatively,

- proved construction rings or members QUIsT, a subject co pending patent application,

for use, all as will be hereinafter fully set forth.

i be carefully defined in theclaim;

accompanying drawings,

introduction or removal of the balls between the plane indicated by the line (la in Fig. 1, the inner ring or member being shown in to Fig. 2, the inner member being moved to UNIT D s'rarns PATENT curios;

SVEN GUSTAF WINGQUIST,

OF GOTTENBORG,

SWEDEN, ASSIGNOR- TO AKTIEBOLAGET svENsKAiKULLAGERFABRlKEN, 0F GOTTENBORG, SWEDEN.

BALL-BEARING.

messes;

To all whom 'it may concern:

Be it known that I,.SVEN GUSTAF VVING- of the King of Sweden, and a resident of Gottenborg', in theKingdom of Sweden, have invented certain Improvements in Ball-Bearings, of which the following is a specification. v

This invention relates to certain improvements inthat class of ball bearings wherein a certain degree of universal or compensa-' tory movement is afforded between the inner and outer bearingmembers to overcome defects in alinement and facilitate the assemtiling vor separation of the parts, and of which the device shown and claimed in my Ser; No.7 ($95,681 is 'a type, and the object-ofthe invention is to provide-a bearing of this geninexpensive nature The novel features of the invention will In order that my improvements may be better understood Iwill now proceed to describe my invention with reference to, the

wherein- Ifigure 1 is a view of one embodiment of my invention showing the inner and outer of the bearing moved relatively to each other in position to permit the them; Fig. 2 is a sectional View taken diametrically through the bearing; Fig. 3 is a sectional view taken diametrically through the outer ring or member of the bearing, in

elevation; Fig. 4 is a sectional view similar an'angular position adapted topermit'introduction erremoval, of the balls; and Fig. 5 IS a fragmentary sectional view. similar to Specification of Letters Iatent. 7

1907. Serial No. 390,416.

Application filed August. 28,

' Fig.

.ing

' adapted,

Patented une 4, 1912.

2, but 'illustratinga modified construction of the improved bearing.

In'these views 1 represents .the outer ring or member of the improved bearing, and

2 represents the inner ring or member, whichgis adapted to be threaded upon a shaft or which may be constructed as an integral part of .such shaft. Each of these rings or members 1 and2 is formed of an integral annularpart, and the outer ring or member 1 is-provided upon its inner face with tracks 11, 11, which are extended around the inner surfaceof said outer member in annular Y form and parallel with each other, andwhich present internal concentric spherical bearing surfaces which are -struck from the same center point 12, which is positioned at the rotative axis of the inner ring ormember 2,35 indicated in Fig. 4:, the spherical bearsulistantially a continuation of the spherical bearing surface of the other track 11. The

or member from a formation of the outer ring a single or integral iece of metal permits these tracks and their bearing surfaces to be produced in its interior with the greatest possible accuracy and to be uniformly-and properly tempered, and assures their retention in fixed relation during the entire life of the bearing, so that they may not be misplaced accidentally or by reason of unskillful or careless assembling of the parts.

As in the structure shown and claimed in surface of one'such track 11 forming my co-pending patent application, Ser. No.

695,681, the inner ring'Q is of a diameter suificientlysmall to permit the same to be turned freely and with a universal movement around the center point 12 and within the outer ring or member 1, and said inner ring or member 2 is prpvided with a central annular enlargement 2* extended around its central portion, at opposite sides of which enlargement," the peripheral surface of said member 2 is provided with parallel annular grooves'or channels 9 and 10, adapted to receive two annular series of -balls 7 and 8,

respectively, the structure being such that,

when the parts are-assembled with the said two seriesofballs engaged in the respective grooves of tlie inner ring or'member, said inner ring or-memb'er 2 isadaptedfor umversal movement inside of the outer ring or member), each series of balls 7 and 8 being during such universal movement;

, balls,

ment of the parts itwill be evident that the .the stress exerted by element is divided to freely traverse the spherical bearing sur- 7 faces of the respective tracks 11' 11 of the outer ring or member in both circumferential and transverse directibns.

!The inner ring or member 2, series of balls,

and its two 7 and 8, are so arranged with relation to the spherical \bearing surrtaces of the tracks 11, 11 of the outer ring 'or member 1, that the center from which such spherical bearing surfaces of said tracks 11, 11 are struck is positioned substantially midway between the respectiueseries of balls 7 and 8, which are thereby caused to traverse parallel paths atopposite sides of such center, so that in the use of the improved bearing, the rotative, part or and imposed uniformly upon each series of balls 7 and 8. i

The annular grooves or channels 9 and 10 for the inner ring or member 2 atlord tracks which are traversed by the balls of the two annular series 7 and 8, and as herein shown, such grooves or channels are formed with concave, curved surfaces in profile struck with radii greater than those of the balls traversing them, so that each ball in each series 7 and 8 contacts with the track of the in nor member 2 only ata single point opposite to that Whereat it contacts with the corresponding track of the outer member, whereby a regulated rolling movement of the ballsdur ing the use of the improved bearing is assured, and the wear resulting from such usage is distributed uniformly over thesurfaces of the balls and is not imposed thereon in such an unequal manner as would tend to cut-into or deform the surfaces of said By this construction and arrangeannular tracks or bearing surfaces 11, 11, wherewith the respective ball sets or series 7 and 8 are engaged are rcversely inclined to the rotativc axis of the innerring or memher 2 while the surfaces of the grooves or channels 9 and 10 of the inner ring or member 2 adjacent to the central enlargement 2' present oppositely arranged shoulders opposite to said reversely inclined tracks or hearing surfaces 11, 11, ball sets or series held in the grooves of said inner ring or member, are permitted to op crate by their engagement between said reversely inclined tracks or bearing surfaces 11, 11, and the corresponding shoulders afforded by the surfaces of the grooves 9 and 10', to hold said inner ring or member securely against movement in' an axial direction, so as to overcome effectually the effects of end thrust in. either direction along the shaft whereon said inner ring or member is mounted.

The universal movement of the inner ring or member 2 and of its ball sets or series 7 and 8 around the oscillatorycenter point 12, and in contact 'withithe internal spherical so that said respective the annular ball series cillatory center point 12 and in contact with the reversely inclined tracks or bearing surfaces 11, 11, not only affords an extremely strong and compact. structure of the parts,

but-enables the device to be employed asa thrust bearing, since if endwise strain. be applied 'to the shaft in one direction, as for example toward the right, as indicated by the arrow (1 in Fig. 2, such endwise-strain or thrust will be taken up and borne by the ball set or series 8 and the track 11, wherewith the same contacts, while if the thrust be in a reverse direction, as indicated by the arrow at Z) in said figure, the same will be received and borne by the ball set or series 7 and its corresponding track or bearing surface 11.

If desired the central vpart of theinner surface of the outer ring or member 1 may be cut away as indicated at 14 in Fig. 2 so as to produce an annular groove or channel midway between the tracksll, 11, whereat 7 and 8 travel in contact with-said outer ring or member. The use of this cut away portion ,l iis not in any way essential to my present invention, however The parts of the bearing being constructed in this manner: it is evident that the inner and outer members 2 and 1 are capable of universal ti'irning movement relatively one to the other around the oscillatory center point 12 from which the internal spherical,

sald rings or members is so turned or swung relatively to the other in a'.- plane parallel with its axis, as, for example, 7 tions shown in Figs. 1, 3 or 4,-the balls 7 and 8 being held in any preferred way withinthe grooves orchannels 9 and 10 of the inner member or ring, will be thrown outwardly from within the outer ring ormember, so as to be freely removable in case any of such balls-be worn or brokem after which, upon replacement of the balls, the rings or members may be re-adjusted so-as-to stand. one within the other in position for, use, the balls 7 and 8 being carried, by the relative turning of said rings or members during such readjustment, within and in accurate rolling contact with the spherical. bearing: surfaces of the respectiv e tracks ll 11 ofsaidoute'r ring ormember 1. i 3

It will be apparent that i the: guniversal above described permits ofassembling-the to the posiwith which the improved bearing is used,

so as to afford compensation in'case such shaft or other part be bent or imperfectly adjusted.

The improved bearing constructed according to my invention is of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of its strength and of the facility With which irregularities of movementof the ro-I tating parts are accommodated, and it will also be obvious from the above description that the device is susceptible of some modification without material departure from the principles and spiritof the invention. For example, in some cases the construction shown in Fig. 5 maybe adopted with good results, this construction being' similar to that above described, except that three par- -allel series are employed,the innerring'or member 2 being provided with a central groove or channel 16 midway between the to receive an annular. series of balls 15 midway between the balls 7 and 8.

Having described my invention, what I integrally of the inner and grooves or channels 9 and '10 and adapted claim and desireto'secure by [Letters Bat entis:'-

a The herein described improved ball bearing having inner and outer members each metal, the inner member having a pluralit arranged shoulders, and

a plurality of ball'sets arranged in said tracksof the inner member, the outer mem-* formed from a single piece of of peripheral tracks extended around it a fording oppositely her having a concave spherical inner surface struck from a center point positioned at the rotative axis of the inner member and midway between the respective bal'l' sets, and affording concentric tracks haying spherical bearing surfaces reversely inclined to the rotative axis of the inner member and opposite to the shoulders'afl'forded by the respective tracks of tive ball sets shoulders of the inner member and the respective/ reversely inclined bearing surfaces of the'outer memberto transmit end-thrust impose'd'upon said inner member, and said inner member being capable "of universal turning movement around sa-i'cl center point to facilitate the introduction and withdrawal of the ball sets within and from said outer member. a

In witness whereof, I have hereunto signed my'name in scribing witnesses.

SVEN GUSTAF wrueouisr.

Witnesses Bnuo'r W.. FJELLMAN, G'. HENRIKSSON.

the inner member, the respecbeing interposed between; said the presence of two sub- 

